SK139502

View detailed technical data, stock status, and sourcing information for: SK139502
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5990 Synchros and Resolvers

National Stock Number

5990-00-268-9074

Item Name Code

02071

Assigment Date

01/01/1963 (63 years ago)

A synchro, the rotor of which is mechanically positioned for modifying electrical angular information, received from a transmitter synchro and transmitting to receiver synchro or control transformer synchro electrical information corresponding to the sum or difference of the electrical input angle and its rotor position angle. Does not include variable resistors, goniometers, variable transformers, or items with dials.

3.3750 inches maximum shoulder diameter, 6.3600 inches maximum overall length, 3.6230 inches minimum and 3.6250 inches maximum flange diameter, standard round double flange b body style, 1.6300 inches maximum pilot diameter

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Body Style: standard round double flange b
Shoulder Diameter: 3.3750 inches maximum
Pilot Diameter: 1.6300 inches maximum
Overall Length: 6.3600 inches maximum
Flange Diameter: 3.6230 inches minimum and 3.6250 inches maximum
Flange Thickness: 0.2450 inches minimum and 0.2500 inches maximum
Shaft Diameter: 0.2498 inches minimum and 0.2500 inches maximum single shaft
Shaft Length: 0.7600 inches minimum and 0.7800 inches maximum single shaft
Fragility Factor: moderately rugged
Distance Between Flanges: 1.8070 inches minimum and 1.8170 inches maximum
Maximum Temp Rise: 50.0 celsius
Body Size: 5
Stator Input Voltage Rating In Volts: 115.0 nominal
Stator Input Current Rating: 1.0 amperes maximum
Stator Input Electrical Power Rating: 15.0 watts maximum
Frequency In Hertz: 60.0 nominal
Torque Gradient Per Angular Deg: 0.300 inch-ounces minimum
Shaft End Play: 0.0081 inches nominal
Pilot Length: 0.1750 inches nominal
Shaft Thread Series Designator: unf single shaft
Shaft Thread Direction: right-hand single shaft
Shaft Thread Class: 2a single shaft
Body Material: steel corrosion resisting
Terminal Location: rear
Shaft Thread Length: 0.1770 inches minimum and 0.1970 inches maximum single shaft
Shaft Type: round, threaded single shaft
Shaft Nominal Thread Size: 0.250 inches single shaft
Special Features: round,threaded shaft with slot; slot depth 0.050 inch; slot width 0.035 inch
Test Data Document: "81349-mil-s-2335 specification (includes engineering type bulletins, brochures,etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "nominal", etc.)."
Terminal Type And Quantity: 6 screw
Specification/Standard Data: 81349-mil-s-2335 government specification

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5990-00-927-3076	No Name Available	07/01/1982

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
1357620	Differential Transmitter Synchro
1357621	Differential Transmitter Synchro
213403	Differential Transmitter Synchro
561792-6	Differential Transmitter Synchro
5HDG	Differential Transmitter Synchro
5HDGMK9	Differential Transmitter Synchro
SK139502	Differential Transmitter Synchro